TRIP
NM8N-250 side snaps
into the buckle
Click
Wire outlet
after cutting
1N.m
SHT 21/22 / 24-M8 (shunt release)
When the control voltage is maintained at 70% -110% Un, the
shunt can reliably open the circuit breaker.
UVT 21/22 / 24-M8 (undervoltage release)
a. When the control voltage drops to 35% -70% Un, undervoltage
can reliably open the circuit breaker.
b. When the control voltage is 85% -110% Un, the circuit breaker
should be able to close reliably.
c. When the control voltage is less than 35% Un, it should be able
to prevent the circuit breaker from closing.
Note: The circuit breaker equipped with an undervoltage release
can only open and close normally when the control voltage is
85% -110% Un.
B
Shunt release, undervoltage releaseaction test
NM8N-400 / NM8N-630
type shaft snaps into
the buckle
Click
A
Shunt release, undervoltage release installation
When installing 250-frame
mouldedcase circuit breaker, you
need to push the handle gently in
the closing direction.
NM8N-125 type,
NM8N-400 / NM8N-630 type,
NM8N-800 type, you need to
gently push the right slot into
the closing direction before
installation
Zhejiang CHINT Electrics Co., Ltd.
Add: No.1, CHINT Road, CHINT Industrial Zone, North Baixiang, Yueqing, Zhejiang Province.
Tel: 86-577-62777777 4001177797
Fax: global-sales@chint.com
Web：http://en.chint.com
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